Suspension-clamp



' W. S. MAYER.

SUSPENSION CLAMP.

APPLICATION FILED SEPT 22. 1919.

Patgnted July 26, 1921.

J JiwenZOr Walter SJVay-z r 3. J; j 2M UNITED STATES;

WALTER s. MAYEIeoE PHILADELPHIA, 'rEnnsYLvAnIA, Assrenon TO-ELECTRIC it PATENT OFFICE.

SERVICE SUPPLIES COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

RATION OF PENNSYLVANIA.

SUSPENSION-CLAMP.

Y To all whom it mag concern Be it known that I, WALTER S. MAYER, a citizen of the United States, residing in the city of Philad'elphia,in the county of Philadelphia and State of Pennsylvania, have invented certain Improvements in Suspen sion-Clamps, of which the following is a specification.

pose is to provide a construction that-is im-' proved 1n simplicity, efficiency, compactness and durability, with parts of minimum number, sturdy character and positive action The improvements are characterized by a threaded body member having a; wedgin'g section, a sleeve threaded on the body member, and jaws fulcrumed on the sleeve and rocked thereon by the movement thereof in contact with the wedging section.

The characteristic features of the invention are embodied in the construction set out in the following description and the accompanying drawing in illustration thereof.

In the drawings, Figure 1 is a side elevation of a construction embodying the invention as commonly applied in use; Fig. 2 is a vertical sectional view taken centrally therethrough, and Fig. 3 is a sectional view taken on the line 3"-3" of Fig. 2.

The mechanism illustrated comprises the insulating support 1 from which depends the threaded stud 2 of usual construction.

A body nut 3 is screwed on and suspended by the stud 2, the nut being provided with the angular or wrenching top section 3, the downwardly tapering or coned bottom section 3 and the intermediate threaded section 3.

A sleeve nut 4 is screwed on the body nut 8, being provided with the angular or "hubs 5 which contain the downwardly tapering conical recesses or seats 5 which; register with the conical or wedging section 3" and the circular notches 5. which register with the flange 4. The taper of the conical section 3 is greater than. the taper ofthe recesses 5 and the jaws 5 (normally separated at their tops by the cone 3) are Specification of Letters Patent. Patented 1 726. 1921 Application fi led September 22, 1919. Serial No. 325,588. I

adapted to come together, so that their hubs conductor 6 having the longitudinal grooves 6f between which is the tongue 6", the lips 5 be ng engaged- 1n the grooves (3 and the tongue 6 disposed in the notches 5 In operation, when the parts are assembled and the sleeve 4 is down, the jaws 5 are separated so that the tongue 6" can be entered between 1 the lips '5, .which are brought together thereon. The sleeve 1?:IS now turned up on the body 3,".vhen the flange 4 carries the jaws upwardly and the memberBP simultaneously spreads-the hubs.

5%,thej'awsbeing. rocked thereby on the flange as a fulcrum and the lips 5 thus pressed firmly against the tongue 6 As the body nut 3 is screwed up, tight. against the insulator 1, lateral strains upon the stud 2 are prevented, and as the jaws 5 are swiveled in the revoluble sleeve 4, they can be set and tightened in correct alinement or registration with the wire 6.

Having described my invention, I claim:

1. In a clamp, the combination with abody member provided with a thread and a wedglng section, of a pair of jaws having parts between which said wedging section 1s disposed, and a sleeve threaded on said body member and engaging said jaws, whereby said jaws are rocked oppositely.

2. In a clamp, the combination with a body member provided with a thread and a conical section, of a sleeve having a thread engaging the thread of said member, and jaws fulcrumed by means of said sleeve and having said conical section disposed between them, whereby the operation of said sleeve causes said jaws to=be rocked oppo-' sitely by the action of said conical member thereon.

3. In a clamp, the combination with a member provided with a tapered section, of a sleeve movable longitudinally of said member, and jaws having hubs extending into said sleeve on opposite sides of said tapered section, said Sleeve and hubs having means whereby said jaws are fulcrumed and drawn toward said tapered section,

its

screwed on said nut, and a pair of jaws fulcrumed me said sleeve on opposite sides of whereby said hubs are spread and said jaws are rocked oppositely to effect their clamping 0 eration.

4. n a clamp, the combination with a stud, of a nut screwed on said stud, a sleeve said nut, said nut and jaws having coacting means whereby the latter are rocked oppositely. V

5. In a clamp, the combination with a stud, of a nut screwed on said stud, said nut having a conical end-taperingfrom said stud, a sleeve threaded on said nut, said" sleeve having an inturned flange, and a pair of jaws having segmental hubs extending into said sleeve, said hubs being fulcrumed on said flange and containing seg mental cone recesses of smaller angularity than said conical end and in engagement with said end on opposite sides thereof.

6. A clamp for a trolley wire'comprising,

in combination, a member adapted for engagement with a hanger stud, two clamping members engaged with said member and capable of rotation therearound, each of said clamping members being provided with an" external bearing, and a member threaded upon the first'named member and adapted to engage the bearings of the clamping members to force the clamping members one towardlthe other, the face of the second named member opposed to the clamping members being provided with, a recess, said clamping members (being provided with parts disposed within said recess.

7. A clamp for a trolley wire comprising,

in combination, a suspension member provided with a socket in one end, the wall of said socket being threaded for engagement with a hanger stud, said suspension member being provided with an angular head to provide means for screwing'the suspensionmember on the hanger stud, two clamping members engaged wlth the'suspension memher and capable of rotation therearound,

each of said clamping members being pro-c vided with an external bearing, and a member threaded 'upon'the first named memb'er' and adapted to engage the bearings ofthe clamping members to force the clamping members one toward theother, the face of the second namedm'ember opposed to the W LTERSQMAYERZ 

